The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. Established in 1999, it focuses on the development of space technology, including satellites, launch vehicles, and space exploration missions. CASC plays a crucial role in advancing China's capabilities in space science and technology. CASC oversees various projects, such as the Long March rocket series and the Tiangong space station. The corporation also collaborates with international partners on space research and technology development, contributing to global advancements in aerospace. Its efforts aim to enhance China's position in the global space arena.